ἠχεῖον,τό, (ἦχος)
A. drum, gong, Plu. Crass. 23 , Apollod. ap. Sch. Theoc. 2.36 , Procop.Gaz. Ecphr. p.153B. ;tambourine, as head-dress, Herm.Trism.in Rev.Phil. 32.254 ; used for stage-thunder, Sch. Ar. Nu. 292 ; as sounding-boards in the theatre, Vitr. 5.5.2 .
II. in the lyre, = χάλκωμα , apptly.a metallic sounding-plate, Hsch. ; so of the palate, Gal. UP 7.5 .
2. Adj. ἠχεῖον ὄργανον soundinginstrument, Ph. 1.588 , cj.ib. 444 , 510 .